Some people talk about having a "career year". John Paciorek had a career in one day.

The Detroit native signed with the Colt .45s in 1963 with high hopes to fast-track to the big leagues. He was called up near the end of the season along with several other young players as the franchise was eager to show off their young talent.

On September 29, 1963, in the season's last game, the Colts hosted the New York Mets. Paciorek (pron: Pa-CHORE-ek) started in right field and made five trips to the plate in a 13-4 victory. He spanked three singles and walked twice, scoring four times and driving in three. Injuries kept him out of spring training in 1964 and he was never able to work his way back to the majors, retiring with a 1.000 batting average, the only one to do so with as many as three big league at bats or five plate appearances.

His brothers Jim (48 games) and Tom Paciorek (18 years) had better luck staying in the majors but neither can match John's career batting mark.